Derivative Instruments (Schedule Of Collateral Amounts With Rights To Reclaim Or Obligation To Return Cash) (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Credit Derivatives [Line Items]
Collateral Posted by Counter-Party (Held by LNC)	$ 3,538	$ 3,273
Collateral Posted by LNC (Held by Counter-Party)	(121)	(172)
AA- [Member]
Credit Derivatives [Line Items]
Collateral Posted by Counter-Party (Held by LNC)	510	383
Collateral Posted by LNC (Held by Counter-Party)	(5)	(6)
A+ [Member]
Credit Derivatives [Line Items]
Collateral Posted by Counter-Party (Held by LNC)	1,781	1,718
Collateral Posted by LNC (Held by Counter-Party)	(111)	(166)
A [Member]
Credit Derivatives [Line Items]
Collateral Posted by Counter-Party (Held by LNC)	1,247	1,172
Collateral Posted by LNC (Held by Counter-Party)	$ (5)